Automatic oil-tank cut-off.



B. G. JEWELL, AUTOMATIC OIL TANK OUT-OFF. APPLICATION FILED D110. 19, 1908.

921 ,7'1 2 ratentea May 18, 1909.

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BERT e. JEWELL, or ROBINSON, ILL1NO1S.

AUTOMATIC OIL- TANK GUT-OFF.

Specification of Letters Patent.

Patented May 18, 1909.

Application filed December 19, 1968. Serial No. 468,374.

To all whom it may concern:

Be it known that I, BERT G. JnwnLL, citi- 1 zen of the United States, residing at Robin- 1 son, in the county of Crawford and State of 1 Illinois, have invented certain new and use ful Improvements in Automatic Oil-Tank CutOffs, of which i the following is a specifica tion.

The present invention relates to an improved cut ofi device embodying novel means for automatically shutting off the out- 1 flow of fluid from a tank when the level of the 1 liquid reaches a predetermined point] i The invention is more particularly designed for use in connection with oil tanks which serve to feed pipe lines, since it is very essential in the operation of these tanks that the level of the oi never fall below the outlet so as to permit air to enter the pipe line, and where an automatic device is not employed it is neces l sary to provide an attendant to watch the tank and close the valve at the required time.

The object of the invention is the provision of an automatic out off of this character which is simple and inexpensive in its construction, and which will operate in a positive and effective manner to close the stop of the pipe at the required time.

For a "ull understanding of the invention and the merits thereof and also to acquire a knowledge of the details of construction and the means for effecting the result, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a vertical sectional view through an oil tank provided with the improved cut- 1 ofi, portions of the tank being removed; Fig. 2 is a side elevation of the oil tank, portions being broken away; and, Fig. 3 is an enlarged sectional view through the outlet pipe lead ing from the oil tank.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawings by the same reference characters.

Referring to the drawing, the numeral 1 designates the oil tank which may be of any approved construction and discharged into a pipe line through the outlet pipe 2. A rotary stop cock is applied to the outlet pipe 1 and a lever 3 is secured to the square end of the stop cock for turning the same. Fitted against one side of the outlet pipe and secured thereto by means of the U-bolt 4, is a saddle 5 which carries a rod rest 6, the said 1 rod 7.

rodrest being pivotally mounted so as to swing laterally about a vertical axis. The lower end of an upright rod 7 is clamped securely within a socket within the rod rest 6 by means of a set screw 8, while the upper end of the rod passes through the overhanging portion of the roof 9 of the oil tank and is provided with a head 10. Pivotally mounted at an intermediate point in its length upon this head, is a lever 1 1 one arm of which projects over the roof 9 and has a wire or cable 12 connected thereto, while the opposite end of the lever is curved downwardly and bifurcated at 13 to receive a pin 14 which projects from the head 10.

A weight 15 is slidably mounted upon the upright rod 7 and is provided with a bail 16 designed to engage the pin 14 to hold the weight in an elevated position. However, when the long end of the lever 11 is swung downwardly the bifurcated end 13 of the lever pushes the bail 16 over the end of the pin 14 so as to release the weight and cause it to slide downwardly upon the rod 7 by the action of gravity. A link 17 has one end thereof pivotally connected to the stop operating lever 3 while the op osite end is formed with an elongated eye 18 l oosely receiving the When the weight 15 drops it is de signed to strike against the link 17' and act through the medium of the said link to swing the lever 3 downwardly and close the stop of the outlet pipe. The wire 12 which is connected to the extremity of the long arm of the lever 1 1 passes loosely through the roof of the tank and has a weight 19 applied to the extremity thereof, the said weight hanging in the oil or other liquid on substantially a level with the top of the outlet pipe. A float 20 is arranged Within the tank and is formed with an opening loosely receiving the wire 12 so that the float can move independent of the wire until the surface of the oil has been lowered to the weight 19. The float then rests upon the weight and pulls upon the wire 12 so as to swing the lever 11 and release the weight 15 as previously described, the said weight in its descent striking against the link 17 and closing the stop. At this point attention may be directed to the fact that any binding of the parts is rendered impossible since the rod rest 6 is mounted so as to swing laterally, thereby permitting any slight movement of the guide rod which may be necessary to facilitate a free sliding movement of the upper end of the link 17 thereon.

.viding an attendant to watch the. tank and to the lever and having a sliding engagement an elevated position, the said weight upon its I 3. The combination of a tank, an outlet pipe for the tank, a valve for the outlet ipe, a lever for the valve, a ivotally mounted rod rest projecting from t e outlet pipe, an upright rod having the lower end thereof secured to the said rod rest, a link connected to the valve lever and having a sliding engage ment with the upright rod, and a weight slidl able upon the rod and designed to act upon the link to swing the ever and close the valve.

4. In a deviceas specified the combination of a tank, an outlet pipe positioned in the lower end of said tank, at the side thereof, ,a

dpipe, a lever out- It will thus be obvious that with the use of my improved cut off device the outlet stop will be automatically closed at the required time and there will be no necessity for proclose the stop by manual means when the oil has been drawn off down to the outlet.

Having thus described the invention, vwhat is claimed as new is:

1. The combination of a tank, an outlet pipe for the tank, a valve for the outlet pipe, a ever applied to the valve for o erating the a lin connected same, an upright guide rod,

with the guide rod, ahead at the upper end of the guide rod, a in projecting from the head, a weight slidab T mounted upon the guide rod, :a bail applied to the weight and designed to engage the pinto hold the weight in I valve positioned in said l wardly extended fromsai valve, a guide carried by said pipe adjacent said lever, a head mounted on said tank and extended outwardly therefrom, a guide rod depending from said head and engaged in said guide, .a link carried by said lever and .looselyengaged about said guide, a weight .slidably ositioned on said guide for engagement at t mes with the loosely mounted extremity ofsaid link to actuate said valve, a forked lever fulcrumedin theupperextremity of said guide rod above said head, ,a pin carried by said head and engaged between the fork arms of said lever, a bail carried by said weight and detachablyengaged over the outer extremity ofsaid pin, a wire depending in said tank from the inner end of said forked lever, an enlarged weight positioned on the lower extremity of said wire and a fioat loosely engaged about said wire to engage said weight and depress the same to swing said forked lever and disengage said bail from said ,pin. In testimony whereof I affix my signature .in presence of two witnesses.

BERT G. JEWELL. Witnesses R. HOOKE SAMUEL M. Bnrrs.

descentstriking against the before mentioned link and closing the valve, and means for antomatically forcing the bail out of engagement with the pin when the level of the liquid within the tank reaches a predetermined point.

2.. The combination of a tank, an outlet pipe for the tank, a valve for the outlet pipe, a ever for operating the valve, an upright guide rod, .a inkconnected to the lever ,and having a sliding connection with the guide rod, a head at the upper end of the guide rod, a pinproj ecting from the head, aweight slidably mounted .upon the guide rod, .a bail a plied tothe weight and adapted to engage t 1e pin to hold the weight in ,an elevated posi tion, the said weight striking against the before mentioned linkand serving to close the valve upon its descent, a lever formed with a bifurcated end receiving the pin, and means for automatically swinging the lever to force the bail over the end of the in to release the weight when the level of the iquid within the tank reaches a predetermined point. 

